Cryptography

Cryptography, or cryptology is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages.

GitHub: https://github.com/topics/cryptography
Wikipedia: https://en.wikipedia.org/wiki/Cryptography
Last updated: 2026-06-23 00:06:53 UTC
JSON Representation

https://github.com/zunainaliazam/pixcrypt---image-security-suite

PixCrypt - A simple implementation of image encryption/decryption using AES Algorithm in client side JS.

aes-encryption bootstrap5 cryptography cryptojs css3 html5 js

Last synced: 30 Apr 2026

https://gitlab.com/hackancuba/blake2signer

Using BLAKE in keyed hashing mode to sign and verify data.

blake2 blake3 cryptography hashlib hmac python

Last synced: 15 Feb 2026

https://github.com/timebertt/grypto

Understanding cryptographic algorithms by implementing them in Go :mortar_board:

cryptography golang learning-by-doing learning-exercise

Last synced: 08 Jun 2026

https://github.com/vishesh-gupta/cryptology

Container for multiple Cryptography algorithms, ciphers and techniques

cryptography hashing-algorithm rsa-key-encryption secure-hash-algorithm

Last synced: 09 Feb 2026

https://github.com/tangle-network/masp-protocol

Multi-asset shielded pool extending protocol-solidity contract system

cryptography privacy zero-knowledge

Last synced: 31 Jan 2026

https://github.com/iamnotstatic/wallet-manager

This is for managing crypto addresses and generation

bitcoin blockchain cryptocurrency cryptography ethereum

Last synced: 14 Feb 2026

https://github.com/siddhpant/junior-inctf-2017-writeup

Writeups for Junior InCTF 2017

android binary-exploitation cryptography ctf ctf-challenges ctf-solutions ctf-writeups forensics reverse-engineering trivia web-exploitation

Last synced: 29 Apr 2026

https://github.com/karakun/encrypted-filechannel

Transparent encryption for java.nio.channels.FileChannel

crypto cryptography java nio security tink

Last synced: 05 Mar 2026

https://github.com/ktauchathuranga/inline-cryptography-toolkit

A Visual Studio Code extention for encrypt, decrypt, and hash text Inline.

cryptography encryption-decryption hashing vscode-extension

Last synced: 13 Feb 2026

https://github.com/tynes/libsigner

manage watch only bitcoin wallets with bcoin

bcoin bitcoin cryptography ledger nodejs trezor

Last synced: 08 May 2026

https://github.com/adamo08/encryption-decryption

This repository contains implementations of various encryption and decryption algorithms in Python. The goal is to provide simple and easy-to-understand code for educational and practical purposes.

affine-cipher algorithms caesar-cipher cryptography decryption des-cipher encryption hill-cipher python security vigenere-cipher

Last synced: 11 Feb 2026

https://github.com/ornella-gigante/cryptosafe

A simple Java application for encrypting and decrypting messages and files using DES and RSA algorithms, featuring a user-friendly menu interface. Perfect for learning about cryptography and secure file handling.

assymetric-encryption assymetric-key-cryptography asymmetric-cryptography cipher-algorithms cryptography decipher des java java-8 rsa-cryptography

Last synced: 13 Feb 2026

https://github.com/ideal-lab5/etf

"Encryption to the Future" consensus and node

blockchain cryptography substrate timelock-encryption

Last synced: 17 Mar 2026

https://github.com/micchickenburger/cryptotools

A versatile cryptographic tool for data hashing, encryption, decryption, digital signing, password security, and secure random number generation, entirely in the browser.

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Last synced: 13 Feb 2026

https://github.com/thenaubit/crypto-password-generator

🦄 A cryptographically secure password generator!

cryptography emotionjs mantine-ui nextjs password-generator typescript

Last synced: 20 Apr 2026

https://github.com/ramesht007/secure_multi_party_computation

My notes for secure multi party computation. Still in progress.......................

cryptography secure-multi-party-computation

Last synced: 30 Jan 2026

https://github.com/ishivanshgoel/securechat

End-to-end encrypted chat application using RSA algorithm. Backend: https://github.com/ishivanshgoel/securechat-app/

bootstrap cryptography css html javascript rsa-cryptography

Last synced: 08 May 2026

https://github.com/virgilsecurity/virgil-ratchet-kotlin

Virgil Security Ratchet SDK provides an implementation of the Double Ratchet algorithm, which is used by parties to exchange encrypted messages based on a shared secret key.

cryptography doubleratchet encryption perfect-forward-secrecy pfs ratchet

Last synced: 13 Feb 2026

https://github.com/aarambh-darshan/mini-blockchain

A robust, full-stack blockchain engine built in Rust. Features a custom VM for smart contracts with real gas economics, Proof-of-Work consensus, UTXO transactions, multisig wallets, and a real-time SvelteKit block explorer.

blockchain cryptography defi distributed-systems p2p proof-of-work rust smart-contracts sveltekit utxo vm web3

Last synced: 10 Feb 2026

https://github.com/zozs/filecryptify

Simple file and stream encryption tool based on libsodium

cryptography libsodium unix

Last synced: 12 Feb 2026

https://github.com/ajay-dhangar/project_crypto

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crypter crypter-defender crypto cryptocoins cryptocurrencies cryptocurrency cryptocurrency-exchanges cryptocurrency-prices cryptography cryptojs crystal crystal-lang crystal-language

Last synced: 12 Feb 2026

https://github.com/yodalightsabr/2password

2Password: A cryptography experiment

aes-256 cryptography experimental password-manager

Last synced: 10 Feb 2026

https://github.com/powershelllibrary/crypto.aes

PowerShell module for cryptography (RSA)

aes aes-encryption aes-gcm cryptography decryption encryption powershell powershell-module

Last synced: 04 Mar 2026

https://github.com/lyang/gpg-utils

Simple Wrapper for shelling out to gpg

cryptography gnupg gpg java processbuilder

Last synced: 01 Feb 2026

https://github.com/arec1b0/crypto-comparison

A comprehensive project comparing classical and quantum cryptography. Includes detailed explanations, code examples, and tests for various cryptographic algorithms and protocols.

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Last synced: 27 Feb 2026

https://github.com/sgiath/secp256k1

Elixir wrapper for Bitcoin Core secp256k1 library

bitcoin cryptography elixir secp256k1

Last synced: 01 Feb 2026

https://github.com/prajwalg12121998/avalanche-effect-in-des-and-triple-des

This is a coding assignment as part of Computer Security subject. It does analysis of Avalanche Effect in DES and Triple DES

avalanche-effect blockcipher cryptography des des3

Last synced: 17 Jun 2026

https://github.com/primefactor-io/xchacha20-poly1305

100% RFC compliant implementations of ChaCha20-Poly1305 and XChaCha20-Poly1305

chacha20 chacha20-poly1305 cryptography cryptography-algorithms poly1305

Last synced: 01 Mar 2026

https://github.com/knightchaser/cryptography

A programmatic resource for cryptography (Gachon CPS + Personal)

algorithm cryptography implementation resource snippet

Last synced: 03 Aug 2025

https://github.com/diptochakrabarty/voice-encryption

Use Sockets and Encryption Algorithms for cryptography project

cryptography encryption hashing-algorithm rsa rsa-cryptography

Last synced: 01 Aug 2025

https://github.com/pprattis/Advanced-Encryption-Standard-for-credit-card-number

A script in Python that encrypts and decrypts a credit card number with AES.

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Last synced: 28 Sep 2025

https://github.com/substrate-system/keys

Create and store asymmetric keys with the webcrypto API in the browser

browser cryptography keypair keys

Last synced: 28 Sep 2025

https://github.com/dstein64/lc4

An implementation of ElsieFour (Alan Kaminsky 2017).

cryptography elsie-four lc4

Last synced: 20 Mar 2025

https://github.com/Signal-K/Prof

Prof, from the icelandic word for tests: automated unit tests for the Star Sailors ecosystem

blockchain blockchain-game buildspace cryptography dao dao-design-pattern ethersproject magic nft star-sailors thirdweb

Last synced: 11 May 2025

https://github.com/p3t3r67x0/vigenere_cipher

Simple programm to encrypt or decrypt a vigenere cipher text. This tool might be handy for some CTF games.

crypto cryptography ctf ctf-tools python vigenere-cipher

Last synced: 21 Jul 2025

https://github.com/ashubly25/cryptography

My Work consists of Diffie-Hellman-Fibonacci, Hashing and XOR Cipher

cryptography

Last synced: 26 Mar 2025

https://github.com/gavincarr/go-slip39

A SLIP-0039 library for Go.

bitcoin cryptography go slip39

Last synced: 31 Jul 2025

https://github.com/0xnu/qrme

qrme is a quantum-resistant encrypted machine learning system designed to protect sensitive data and models against potential threats from quantum computing.

cryptography large-language-model large-language-models llm llms post-quantum-cryptography

Last synced: 25 Jan 2026

https://github.com/mbarkt3sto/mb-security-dll

A DLL library for (C#.NET ) helping you to Encrypt & Decrypt data

0x0b byte-array cryptography cryptography-library csharp csharp-library decrypt-data decryption-model dll-library dotnet dotnet-library encrypted-data encryption-operation information-security initialization-vector mb-security-dll

Last synced: 09 Jul 2025

https://github.com/cedws/ki-keyring

Utility for ejecting/injecting sets of obfuscated public keys from/into WizardGraphicalClient binaries

cryptography go reverse-engineering

Last synced: 05 May 2025

https://github.com/anmol-singh-jaggi/sha2_512

:lock_with_ink_pen: An implementation of SHA-2 hash function with a digest size of 512 bits

c-plus-plus cryptography digest hash

Last synced: 26 Mar 2025

https://github.com/JuliaCrypto/Krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 06 Apr 2026

https://github.com/kernelmethod/ChaChaCiphers.jl

GPU-compatible implementations of the ChaCha stream cipher family

cryptography rng

Last synced: 06 Apr 2026

https://github.com/64/kaiser

Classical cryptanalysis tool

caesar-cipher cipher classical-cipher classical-cryptography crypto cryptography rust

Last synced: 06 May 2025

https://github.com/jsign/kzg-ceremony-test-vectors

Ethereum KZG ceremony test vectors using the reference implementation

cryptography ethereum kzg powers-of-tau

Last synced: 04 Apr 2025

https://github.com/phuc16102001/lamport-signature

The project implement the Lamport Signature which is a Digital signature. Furthermore, its weakness is spotted out by forging a signature.

blockchain cryptography digital-signature golang lamport-signature

Last synced: 15 Jan 2026

https://github.com/fametrano/bbt

Bitcoin and Blockchain Technology Course Material

bitcoin blockchain blockchain-technology cryptocurrencies cryptography

Last synced: 22 Jun 2025

https://github.com/darshan-kc/python-caesar-cipher

A substitution cipher that shifts letters by a fixed number of positions

cryptography python3

Last synced: 10 Apr 2025

https://github.com/bytemare/crypto

Abstracted prime-order elliptic curve groups in Go.

cryptography elliptic elliptic-curves go hash-to-curve nist p256 p384 p521 prime-order-group rfc9380 ristretto255

Last synced: 10 Apr 2025

https://github.com/ancientlore/hashsrv

A web service that performs hashing, encryption, encoding, and compression.

cryptography encoding golang hashing webservice

Last synced: 06 May 2025

https://github.com/sc0vu/js-keccak-tiny

Keccak tiny emscripten binding in javascript, including SHA-3/Keccak/Shake hash function.

cryptography hash keccak keccak-tiny sha3 shake wasm webassembly

Last synced: 13 Apr 2025

https://github.com/lablnet/cryptographic_algorithms

My own implementation of the Cryptographic Algorithms in Python.

algorithms cryptography python

Last synced: 08 Sep 2025

https://github.com/darshan-kc/python-vigenere-cipher

Vigenere Ciphere using python

cryptography python3

Last synced: 14 Aug 2025

https://github.com/danieldidiobalsamo/sha256_golang

Go SHA-256 from-scratch implementation

cryptography go hasing sha256

Last synced: 11 Apr 2025

https://github.com/rtmigo/dmk_py

Experimental encryption app

cli cryptography deniable-encryption encrypted-store file-encryption information-security linux macos obfuscation package password-manager password-storage plausible-deniability posix python windows

Last synced: 10 Jul 2025

https://github.com/lnqs/subchain

Local Blockchain Module for JavaScript

blockchain cryptography incredible javascript local typescript

Last synced: 16 May 2026

https://github.com/virgilsecurity/demo-nexmo-chat-android

A simple Web application that demonstrates how the end-to-end encryption works in chat messaging use case. The application uses Nexmo as a messaging provider.

android chat cryptography e2ee encryption end-to-end-encryption messenger nexmo secured-by-virgil vonage web-app

Last synced: 09 May 2025

https://github.com/notadminn/ethwallethunter

EthWalletHunter generates random Ethereum wallets, checks their transaction history and balance, and logs "interesting" wallets with activity or balance. It's optimized for performance with multithreading and system resource monitoring. Intended for educational and research purposes only.

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Last synced: 10 Jul 2025

https://github.com/virgilsecurity/virgil-keyknox-javascript

Keyknox SDK allows developers to communicate with Virgil Keyknox Service to upload, download, and synchronize encrypted sensitive data (private keys) between different devices.

cryptography data-sharing keyknox sdk

Last synced: 09 May 2025

https://github.com/xscriptorcode/xkyber_crypto

xKyberCrypto post-quantum encryption solutions in flutter based on the Kyber algorithm.

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Last synced: 11 Apr 2025

https://github.com/cyrildever/feistel-jar

Feistel cipher implementation for the JVM providing format-preserving encryption

algorithm cryptography encryption feistel-cipher format-preserving-encryption fpe xor-operation

Last synced: 19 Feb 2026

https://github.com/cuhsat/spritz.c

Spritz cipher implementation in ANSI C.

algorithm ansi-c c cryptography spritz

Last synced: 12 Apr 2025

https://github.com/varun-doshi/rs-merkletree

Rust Library to create Merkle Trees

cryptography data-structures ethereum hash merkle-proof merkle-tree rust tree

Last synced: 04 Oct 2025

https://github.com/quyxishi/ethanium

XChaChaPoly1305-Argon2id cli, built on cryptopp & libsodium

argon2id cli cryptography windows xchacha20-poly1305

Last synced: 15 May 2026

https://github.com/sdrapkin/securitydriven.winter

Cloud-Scale Cryptography.

aead aes-gcm cryptography gcm streaming

Last synced: 13 Apr 2025

https://github.com/virgilsecurity/virgil-sdk-pfs-x

Virgil PFS SDK Objective-C/Swift

carthage cocoapods cryptography encryption perfect-forward-secrecy pki swift virgil-cards virgil-pfs-sdk

Last synced: 21 Aug 2025

https://github.com/alisianoi/lyra2-java

Subset of Lyra2 password hashing

cryptography hash-algorithm password

Last synced: 05 Apr 2025

https://github.com/haskell-cryptography/one-time-password

Haskell implementation of One-Time Passwords algorithms

cryptography haskell hotp totp

Last synced: 12 Jun 2025

https://github.com/pelock/stringencrypt-vscode-extension

Encrypt and hide plain text strings & file contents within your source code in a secure & encrypted form with the help of a polymorphic engine, generating random-looking decryption code every time.

cryptography encryption file-encryption polymorphic-engine security string-encoding string-encryption string-generator

Last synced: 30 Jul 2025

https://github.com/battleoverflow/encrypt-it

🔐 Simple password generator offering various encryption methods.

cryptography encoding encryption python

Last synced: 15 Jun 2025

https://github.com/corvuscodex/multithread-polkadot-brute-force

Nodejs script that generates random private keys for the Polkadot blockchain and checks if the corresponding public address is in a list of addresses stored in a file named ‘data.txt’. If a match is found, the script logs the public address and saves the wallet and its private key (seed) to a file named ‘match.txt’.

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Last synced: 13 Apr 2025

https://github.com/snykk/ctf-writeups

ctf writeups

binary capture-the-flag cryptography ctf-learn ctf-writeups forensics pico-ctf reverse-engineering steganography web-exploitation

Last synced: 14 Jul 2025

https://github.com/juliacrypto/krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 13 May 2025

https://github.com/dedis/fixbuf

Fixed length binary encoding of arbitrary structures in Go

cryptography encoding fixed-length golang

Last synced: 21 Sep 2025

https://github.com/tramires/cose-w

WebAssembly COSE RFC 8152 library to encode/decode COSE messages in JS.

cbor cose cryptography encrypt js mac npm rust signature wasm

Last synced: 07 May 2025

https://github.com/cmason3/vaulty

Vaulty in Python - Encrypt/Decrypt with ChaCha20-Poly1305

chacha20-poly1305 crypto cryptography ecdh ecies eddsa encryption-tool python scrypt

Last synced: 26 Jul 2025

https://github.com/miraclx/libeaes-js

Enhanced simultaneous compression + encryption prototype with NodeJS

aes-ctr aes-encryption compression cryptography decrypt eaes encrypt gzip pipe stream

Last synced: 28 Oct 2025

https://github.com/codiepp/elykseer-base

cryptographic data archive; written in F#; envisaged to stay another 10 years

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Last synced: 19 May 2026

https://github.com/phayes/fdh-rs

Full Domain Hash library for rust

blind-signatures cryptography full-domain-hash hash

Last synced: 17 Mar 2026

https://github.com/littleli/paillier4j

Simple Paillier cryptosystem library

cryptography homomorphic-encryption paillier property-based-testing

Last synced: 15 May 2026

https://github.com/loicttn/notebooks

All my jupyter notebooks used to learn Cryptography, Mathematics, Security and Machine Learning.

algorithms cryptography jupyter-notebook machine-learning mathematics security

Last synced: 11 Aug 2025

https://github.com/n3m/cryptext

Cryptographic SHA256-AES-Wrapped Passphrase Text Encoder and Decoder

aes aes-encryption aes-gcm cryptography golang passphrase sha256

Last synced: 12 Jan 2026

https://github.com/yangboz/bitcoin-puzzles

The place for Bitcoin related puzzles!

bitcoin cipher cipher-block-chaining cipher-crack ciphertext cryptography image-processing puzzle steganography

Last synced: 02 Apr 2025

https://github.com/dhcgn/gopqexperiment

My Go PQ Experiment

cryptography csidh ed448 go golang hpke post-quantum

Last synced: 26 Aug 2025

https://github.com/lukateras/rust-zerotier-crypto

ZeroTier-compatible cryptography library for Rust

cryptography hashcash rust zerotier

Last synced: 15 Jul 2025

https://github.com/arnaud-robin/shake128

Implementation of SHAKE128 in c++.

cpp cryptography fips202 shake128

Last synced: 10 Apr 2025

https://github.com/martinpaljak/cdoc4j

Java library for handling CDOC 1.0/1.1/2.0 files with AES-256 GCM and RSA or ECC

aes-256 aes-gcm cdoc cryptography encryption java xml

Last synced: 14 Apr 2025

https://github.com/kosasih/quantum-mesh

A cutting-edge Git repository for developing advanced cryptographic protocols and blockchain integration for Pi Network, leveraging quantum computing principles for unparalleled security and efficiency.

cryptography protocol protocol-oriented-programming

Last synced: 08 Mar 2026

https://github.com/erhant/arithmetic-circuits

Moda Palas Blackboard Cryptography II - Arithmetic Circuits & R1CS

circuits cryptography qap r1cs rust

Last synced: 18 Feb 2026

https://github.com/soreing/des-cpp-encrypt

Simple DES encryption library for C++

cpp cryptography des

Last synced: 05 Apr 2025

https://github.com/viniciusfinger/python-blockchain

Exploring the foundational concepts of blockchain with this simple Python implementation. This project demonstrates the core principles of blockchain, including mining, nonce, SHA-256 hashing, and proof of work. 🧱⛓️

blockchain blockchain-technology cryptocurrency cryptography proof-of-work python

Last synced: 12 Apr 2025

https://github.com/sug0/git-signify

Harness the power of signify(1) to sign arbitrary git objects

cryptography git openbsd rust security signature signify

Last synced: 07 May 2025

https://github.com/arad-afzali/aes-file-encryptor-decryptor

AES-File-Encryptor is a Python-based application that provides a user-friendly graphical interface for encrypting and decrypting files or texts using the Advanced Encryption Standard (AES). This tool is designed to help users secure their files or texts by generating encryption keys, and encrypting or decrypting them when needed.

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